math module - Dev Shed

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November 1st, 2004, 02:18 AM

mtcarson

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math module

New to python,

I understand that there should be a built in math module.

If it is functional I should be able to;
>>>pi
3.1315......
but I get;
NameError: name 'pi' is not defined
I can do;
from math import pi
but I should not have to do this.

Anybody know what is going on?
Thanks

November 1st, 2004, 02:36 AM

Grim Archon

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Just like the sys module the math module is always available for importing.

To avoid name space pollution for one thing you still need to explicitly do the import.

grimey

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November 1st, 2004, 09:21 AM

Boki

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Consider the following:

Code:

 >>> import math
>>> pi
Traceback (most recent call last):
File "<stdin>", line 1, in ?
NameError: name 'pi' is not defined
>>> math.pi
3.1415926535897931
>>> from math import *
>>> pi
3.1415926535897931
>>>

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